Primary Purpose
| primary_purpose | Study_Count |
|---|---|
| Treatment | 948 |
| Diagnostic | 72 |
| Supportive Care | 43 |
| Prevention | 17 |
| Other | 14 |
| Basic Science | 10 |
| Health Services Research | 6 |
| NA | 5 |
| Device Feasibility | 3 |
| Screening | 1 |
Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD
See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG
To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html
| Type | Study_count |
|---|---|
| Total_Studies | 1342 |
| interventional | 1119 |
| Observational | 182 |
| Registry | 41 |
```
| intervention_type | Study_Count |
|---|---|
| Drug | 462 |
| Biological | 64 |
| Drug|Radiation | 62 |
| Procedure | 62 |
| Biological|Drug | 52 |
| Device | 52 |
| Drug|Other | 43 |
| Drug|placebo | 41 |
| Radiation | 32 |
| Drug|Procedure | 31 |
| Other | 27 |
| Drug|Procedure|Radiation | 18 |
| Biological|Drug|Other | 12 |
| Drug|Other|Radiation | 12 |
| Diagnostic Test | 11 |
| Behavioral | 10 |
| Biological|Drug|Radiation | 8 |
| Biological|Other | 8 |
| Dietary Supplement | 8 |
| Behavioral|Other | 6 |
| Device|Drug | 6 |
| Biological|Drug|Procedure | 5 |
| Biological|Drug|Procedure|Radiation | 5 |
| Device|Procedure | 5 |
| Dietary Supplement|Drug | 5 |
| Drug|Other|placebo | 5 |
| Other|Procedure | 5 |
| Biological|Procedure | 4 |
| Drug|Other|Procedure|Radiation | 4 |
| Procedure|Radiation | 4 |
| Device|Other | 3 |
| Drug|Genetic | 3 |
| Drug|Other|Procedure | 3 |
| Genetic | 3 |
| Behavioral|Procedure | 2 |
| Biological|Drug|Other|Procedure | 2 |
| Biological|Drug|Other|Procedure|Radiation | 2 |
| Biological|placebo | 2 |
| Biological|Radiation | 2 |
| Combination Product | 2 |
| Combination Product|Drug | 2 |
| Diagnostic Test|Drug|Other | 2 |
| Behavioral|Drug|Genetic|Other|Procedure | 1 |
| Behavioral|Drug|Other | 1 |
| Behavioral|Drug|Other|Procedure | 1 |
| Behavioral|Drug|placebo | 1 |
| Behavioral|Other|Procedure | 1 |
| Biological|Device|Procedure | 1 |
| Biological|Drug|Genetic | 1 |
| Biological|Drug|Other|placebo | 1 |
| Biological|Drug|Other|Radiation | 1 |
| Biological|Other|Procedure | 1 |
| Biological|Procedure|Radiation | 1 |
| Device|Other|Procedure|Radiation | 1 |
| Device|Radiation | 1 |
| Diagnostic Test|Procedure | 1 |
| Dietary Supplement|Drug|Other | 1 |
| Dietary Supplement|Other | 1 |
| Drug|Genetic|Other | 1 |
| Drug|Genetic|Other|Procedure | 1 |
| Drug|Genetic|Other|Procedure|Radiation | 1 |
| Drug|placebo|Radiation | 1 |
| Other|placebo | 1 |
| Other|Radiation | 1 |
| Country | Study_Count |
|---|---|
| United States | 608 |
| China | 73 |
| Korea, Republic of | 40 |
| Italy | 32 |
| NA | 29 |
| France | 27 |
| Germany | 27 |
| United States|Canada | 23 |
| Canada | 19 |
| Netherlands | 16 |
| United Kingdom | 16 |
| Japan | 12 |
| Spain | 12 |
| Sweden | 9 |
| Denmark | 8 |
| Switzerland | 5 |
| Austria | 4 |
| Belgium | 4 |
| Israel | 4 |
| United States|United Kingdom | 4 |
| Australia | 3 |
| Brazil | 3 |
| Finland | 3 |
| United States|Israel | 3 |
| United States|Puerto Rico | 3 |
| United States|Taiwan | 3 |
| Hong Kong | 2 |
| India | 2 |
| Poland | 2 |
| Taiwan | 2 |
| United States|Australia | 2 |
| United States|India | 2 |
| United States|Russian Federation | 2 |
| United States|South Africa | 2 |
| Australia|Belgium|United Kingdom | 1 |
| Australia|Brazil|Bulgaria|Croatia|Germany|Hong Kong|India|Italy|Latvia|Lithuania|Malaysia|Mexico|Peru|Romania|Russian Federation|Singapore|Slovenia|Ukraine|United Kingdom | 1 |
| Australia|Canada|Czech Republic|Finland|France|Germany|Greece|Hungary|Italy|Japan|Sweden|Switzerland|United Kingdom | 1 |
| Australia|New Zealand|Spain | 1 |
| Australia|United Kingdom | 1 |
| Austria|Germany | 1 |
| Austria|Germany|Switzerland | 1 |
| Austria|Israel|Italy|Switzerland | 1 |
| Belarus | 1 |
| Belgium|Denmark|France|Germany|Ireland|Italy|Netherlands|Poland|Spain|United Kingdom | 1 |
| Belgium|Egypt|France|Germany|Netherlands|Poland|Turkey|United Kingdom | 1 |
| Belgium|France|Greece|India|Russian Federation|Slovakia|Tunisia|Ukraine | 1 |
| Belgium|France|Israel|Italy|Portugal | 1 |
| Belgium|Spain | 1 |
| Canada|Italy | 1 |
| Cuba | 1 |
| Cyprus | 1 |
| Cyprus|Ireland|Italy|Spain|United Kingdom | 1 |
| Czech Republic | 1 |
| Czech Republic|Hungary|Ukraine | 1 |
| Denmark|Finland|Norway|Sweden | 1 |
| Denmark|France|Germany|Greece|Israel|Netherlands|Switzerland | 1 |
| Denmark|Norway | 1 |
| Denmark|Romania | 1 |
| Egypt | 1 |
| France|Martinique | 1 |
| France|Monaco | 1 |
| Germany|Argentina|Australia|Austria|Belgium|Brazil|Canada|Croatia|Denmark|France|Greece|Hong Kong|Israel|Italy|Lithuania|Mexico|Poland|Romania|Serbia|Singapore|Spain|Taiwan|United Kingdom | 1 |
| Germany|Belgium|France|Israel|Netherlands|Switzerland | 1 |
| Germany|Hungary|Italy|Russian Federation|Spain|Ukraine | 1 |
| Germany|Switzerland | 1 |
| Greece|Netherlands | 1 |
| Hong Kong|Japan|Korea, Republic of|Malaysia|Philippines|Singapore|Taiwan | 1 |
| Iran, Islamic Republic of | 1 |
| Ireland | 1 |
| Ireland|Sweden | 1 |
| Italy|Netherlands|Slovakia|Spain | 1 |
| Japan|Korea, Republic of | 1 |
| Japan|Spain | 1 |
| Japan|Taiwan | 1 |
| Luxembourg | 1 |
| Malaysia | 1 |
| Mongolia | 1 |
| Norway | 1 |
| Norway|Spain|United Kingdom | 1 |
| Peru|Portugal|Italy|Netherlands|United States|Argentina|Australia|Austria|Belgium|Colombia|France|Germany|Greece|Spain|Sweden|Taiwan|United Kingdom|Venezuela | 1 |
| Portugal | 1 |
| Romania | 1 |
| Singapore | 1 |
| Singapore|Taiwan | 1 |
| Slovenia | 1 |
| South Africa | 1 |
| Spain|Australia|Austria|Belgium|Canada|China|Czech Republic|Finland|France|Germany|Israel|Italy|Netherlands|New Zealand|Peru|Poland|Singapore|South Africa|Sweden|Taiwan|United Kingdom | 1 |
| United States|Argentina|Australia|Austria|Belgium|Canada|France|Germany|Hong Kong|Hungary|India|Ireland|Italy|Japan|Korea, Republic of|Netherlands|Russian Federation|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|United Kingdom | 1 |
| United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|China|Germany|Greece|Hong Kong|Israel|Italy|Mexico|New Zealand|Poland|Romania|Singapore|United Kingdom | 1 |
| United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|Germany|Greece|Israel|Italy|Mexico|New Zealand|Poland|Romania|Singapore|United Kingdom | 1 |
| United States|Argentina|Australia|Belgium|Canada|France|Germany|Italy|Netherlands|Spain|Sweden | 1 |
| United States|Argentina|Australia|Brazil|Canada|Czech Republic|France|Germany|Hungary|Italy|Korea, Republic of|South Africa|Spain|Taiwan|United Kingdom | 1 |
| United States|Argentina|Brazil|Bulgaria|Czech Republic|Hungary|India|Mexico|Romania|Russian Federation|Ukraine | 1 |
| United States|Australia|Austria|Belgium|Canada|Czech Republic|France|Germany|Hungary|Ireland|Italy|Poland|Romania|Russian Federation|United Kingdom | 1 |
| United States|Australia|Austria|Belgium|Canada|Czechia|Denmark|Finland|France|Germany|Hong Kong|Hungary|Ireland|Italy|Korea, Republic of|Netherlands|Portugal|Singapore|Spain|Taiwan|United Kingdom | 1 |
| United States|Australia|Austria|Belgium|Canada|France|Germany|Italy|Korea, Republic of|Poland|Spain|Taiwan|United Kingdom | 1 |
| United States|Australia|Belgium|Canada|France|Germany|Israel|Italy|Korea, Republic of|Netherlands|Spain|United Kingdom | 1 |
| United States|Australia|Belgium|Canada|France|Hong Kong|India|Italy|Japan | 1 |
| United States|Australia|Belgium|Canada|Germany|Netherlands|Spain | 1 |
| United States|Australia|Belgium|Canada|Germany|Spain | 1 |
| United States|Australia|Belgium|China|France|Germany|Hong Kong|Italy|Japan|Korea, Republic of|Netherlands|Poland|Singapore|Spain|Taiwan|United Kingdom | 1 |
| United States|Australia|Belgium|Italy|Japan|Netherlands|Spain|Sweden | 1 |
| United States|Australia|Bulgaria|Hungary|Romania | 1 |
| United States|Australia|Canada | 1 |
| United States|Australia|France|Ireland|Italy|Japan|Korea, Republic of|Spain|Taiwan | 1 |
| United States|Australia|Singapore | 1 |
| United States|Australia|Spain | 1 |
| United States|Belgium | 1 |
| United States|Belgium|Brazil|Canada|Chile|Colombia|Czech Republic|Finland|Germany|Hungary|India|Italy|Mexico|Norway|Peru|Poland|Russian Federation|Slovakia|Spain|Turkey|United Kingdom | 1 |
| United States|Belgium|Canada|France|Germany|Italy|Spain|United Kingdom | 1 |
| United States|Belgium|Canada|Germany|Spain | 1 |
| United States|Belgium|Canada|Israel | 1 |
| United States|Belgium|Canada|Italy|Japan|Korea, Republic of | 1 |
| United States|Belgium|Czechia|France|Germany|Italy|Norway|Poland|United Kingdom | 1 |
| United States|Belgium|Finland|France|Germany|Hong Kong|Italy|Japan|Korea, Republic of|Spain|Switzerland | 1 |
| United States|Belgium|France|Germany|Italy|Spain | 1 |
| United States|Belgium|France|Spain|United Kingdom | 1 |
| United States|Belgium|Singapore | 1 |
| United States|Belgium|United Kingdom | 1 |
| United States|Brazil | 1 |
| United States|Canada|Denmark|Germany|Italy|Japan|Korea, Republic of|Spain|Switzerland|Taiwan|United Kingdom | 1 |
| United States|Canada|France|Germany|Italy|Spain|United Kingdom | 1 |
| United States|Canada|France|Italy|Korea, Republic of|Netherlands|Norway|Singapore|Spain|Taiwan | 1 |
| United States|Canada|France|Italy|Spain | 1 |
| United States|Canada|France|Russian Federation|Spain | 1 |
| United States|Canada|Germany|Poland|Spain|United Kingdom | 1 |
| United States|Canada|Israel | 1 |
| United States|Canada|Israel|Norway|United Kingdom | 1 |
| United States|Canada|Israel|Portugal | 1 |
| United States|Canada|Puerto Rico | 1 |
| United States|China | 1 |
| United States|Czechia|France|Lebanon|Romania | 1 |
| United States|France|Hungary|Israel|Korea, Republic of|Romania|Russian Federation|Taiwan | 1 |
| United States|France|Italy|Korea, Republic of|Spain | 1 |
| United States|France|Korea, Republic of|Spain | 1 |
| United States|Germany | 1 |
| United States|Germany|Hungary|Netherlands | 1 |
| United States|Germany|Italy|Netherlands|Romania|Spain | 1 |
| United States|Germany|Spain | 1 |
| United States|Hungary|India|Russian Federation|Ukraine | 1 |
| United States|Japan | 1 |
| United States|Netherlands | 1 |
| United States|Norway|United Kingdom | 1 |
| United States|Singapore | 1 |
| United States|Spain | 1 |
| United States|Spain|United Kingdom | 1 |
| United States|Ukraine | 1 |
| Site_count | Study_Count |
|---|---|
| 1 | 637 |
| 2 | 109 |
| 3 | 57 |
| 4 | 28 |
| 5 | 35 |
| 6 | 16 |
| 7 | 14 |
| 8 | 19 |
| 9 | 12 |
| 10 | 14 |
| 11 | 13 |
| 12 | 12 |
| 13 | 6 |
| 14 | 3 |
| 15 | 11 |
| 16 | 7 |
| 17 | 8 |
| 18 | 4 |
| 19 | 5 |
| 20 | 3 |
| 21 | 6 |
| 23 | 1 |
| 24 | 3 |
| 25 | 3 |
| 26 | 4 |
| 27 | 2 |
| 28 | 2 |
| 29 | 2 |
| 30 | 4 |
| 31 | 2 |
| 32 | 1 |
| 33 | 1 |
| 34 | 1 |
| 35 | 3 |
| 36 | 2 |
| 37 | 1 |
| 38 | 1 |
| 39 | 4 |
| 41 | 1 |
| 42 | 2 |
| 43 | 2 |
| 44 | 1 |
| 45 | 2 |
| 46 | 2 |
| 48 | 3 |
| 51 | 1 |
| 53 | 1 |
| 54 | 2 |
| 57 | 1 |
| 59 | 1 |
| 61 | 2 |
| 66 | 1 |
| 68 | 1 |
| 72 | 2 |
| 73 | 1 |
| 74 | 1 |
| 75 | 1 |
| 76 | 1 |
| 77 | 2 |
| 79 | 2 |
| 84 | 1 |
| 89 | 1 |
| 95 | 1 |
| 101 | 1 |
| 103 | 1 |
| 107 | 1 |
| 111 | 1 |
| 115 | 1 |
| 130 | 1 |
| 136 | 1 |
| 137 | 1 |
| 140 | 1 |
| 145 | 1 |
| 146 | 1 |
| 173 | 1 |
| 188 | 1 |
| 201 | 1 |
| 205 | 1 |
| 229 | 1 |
| 234 | 1 |
| 262 | 1 |
| 281 | 1 |
| 366 | 1 |
| 389 | 1 |
| 434 | 1 |
| 534 | 1 |
| 699 | 1 |
| 789 | 1 |
| 807 | 1 |
| 1328 | 1 |
| Phase | Study_Count |
|---|---|
| Phase 2 | 397 |
| Phase 1 | 264 |
| N/A | 201 |
| Phase 1/Phase 2 | 132 |
| Phase 3 | 74 |
| Early Phase 1 | 21 |
| Phase 4 | 16 |
| Phase 2/Phase 3 | 14 |
| Number_of_Arms | Count_of_Studies |
|---|---|
| 1 | 532 |
| 2 | 327 |
| 3 | 56 |
| 4 | 38 |
| 5 | 8 |
| 6 | 10 |
| 7 | 5 |
| 8 | 1 |
| 9 | 3 |
| 24 | 1 |
| 37 | 1 |
| NA | 137 |
| Count of Versions | Count of Studies |
|---|---|
| 1 | 71 |
| 2 | 85 |
| 3 | 112 |
| 4 | 75 |
| 5 | 72 |
| 6 | 61 |
| 7 | 50 |
| 8 | 57 |
| 9 | 60 |
| 10 | 44 |
| 11 | 46 |
| 12 | 38 |
| 13 | 39 |
| 14 | 29 |
| 15 | 18 |
| 16 | 19 |
| 17 | 15 |
| 18 | 24 |
| 19 | 15 |
| 20 | 14 |
| 21 | 10 |
| 22 | 7 |
| 23 | 7 |
| 24 | 11 |
| 25 | 5 |
| 26 | 5 |
| 27 | 11 |
| 28 | 7 |
| 29 | 6 |
| 30 | 4 |
| 31 | 8 |
| 32 | 5 |
| 33 | 6 |
| 34 | 5 |
| 35 | 2 |
| 36 | 4 |
| 38 | 4 |
| 39 | 1 |
| 40 | 2 |
| 41 | 5 |
| 42 | 3 |
| 43 | 2 |
| 44 | 2 |
| 46 | 1 |
| 47 | 1 |
| 48 | 2 |
| 49 | 1 |
| 50 | 8 |
| 51 | 2 |
| 52 | 1 |
| 55 | 1 |
| 56 | 1 |
| 59 | 2 |
| 60 | 1 |
| 64 | 1 |
| 66 | 1 |
| 67 | 2 |
| 68 | 1 |
| 70 | 1 |
| 73 | 1 |
| 80 | 1 |
| 85 | 1 |
| 87 | 1 |
| 91 | 1 |
| 95 | 2 |
| 97 | 1 |
| 98 | 1 |
| 100 | 1 |
| 101 | 1 |
| 102 | 2 |
| 108 | 1 |
| 123 | 2 |
| 125 | 1 |
| 136 | 1 |
| 183 | 1 |
| 217 | 1 |
| 221 | 1 |
| 229 | 1 |
| 403 | 1 |
| 565 | 1 |
| 883 | 1 |
| 1228 | 1 |
| Change Type | Count_of_Changes | Count_of_Studies | ratio |
|---|---|---|---|
| Study Status | 16745 | 1048 | 15.978053 |
| Contacts/Locations | 7517 | 945 | 7.954497 |
| Recruitment Status | 1806 | 925 | 1.952432 |
| Arms | 1661 | 608 | 2.731908 |
| Interventions | 1661 | 608 | 2.731908 |
| Study Design | 1530 | 775 | 1.974193 |
| Eligibility | 1276 | 587 | 2.173765 |
| Study Identification | 1274 | 563 | 2.262877 |
| None (earliest Version on record) | 1119 | 1119 | 1.000000 |
| Outcome Measures | 1111 | 593 | 1.873525 |
| Study Description | 999 | 488 | 2.047131 |
| Sponsor/Collaborators | 948 | 541 | 1.752311 |
| Conditions | 886 | 388 | 2.283505 |
| Oversight | 730 | 515 | 1.417476 |
| References | 353 | 212 | 1.665094 |
| More Information | 190 | 101 | 1.881188 |
| Results | 155 | 155 | 1.000000 |
| IPDSharing | 110 | 104 | 1.057692 |
| Baseline Characteristics | 60 | 49 | 1.224490 |
| Results Submission Events | 56 | 56 | 1.000000 |
| Documents | 42 | 40 | 1.050000 |
| Participant Flow | 35 | 34 | 1.029412 |
| Reported Adverse Events | 33 | 29 | 1.137931 |
| Measure | Early.Phase.1 | N.A | Phase.1 | Phase.1.Phase.2 | Phase.2 | Phase.2.Phase.3 | Phase.3 | Phase.4 |
|---|---|---|---|---|---|---|---|---|
| Min. | 8.00000 | 1.0000 | 1.00000 | 2.00000 | 2.00 | 20.0000 | 2.0000 | 20.00 |
| 1st Qu. | 14.00000 | 35.0000 | 15.00000 | 25.00000 | 32.00 | 98.2500 | 143.5000 | 38.75 |
| Median | 25.00000 | 60.0000 | 25.00000 | 47.00000 | 50.00 | 159.0000 | 300.0000 | 86.50 |
| Mean | 32.09524 | 153.5622 | 35.82422 | 70.77863 | 91.65 | 220.8571 | 359.3571 | 164.25 |
| 3rd Qu. | 30.00000 | 150.0000 | 39.00000 | 80.00000 | 99.25 | 245.2500 | 540.7500 | 159.50 |
| Max. | 108.00000 | 4606.0000 | 350.00000 | 515.00000 | 6452.00 | 720.0000 | 1110.0000 | 642.00 |
| group_type | Group_Count |
|---|---|
| Experimental | 1325 |
| Active Comparator | 265 |
| NA | 137 |
| Other | 50 |
| No Intervention | 48 |
| Placebo Comparator | 45 |
| Sham Comparator | 4 |
| intervention_model | Study_Count |
|---|---|
| Single Group Assignment | 611 |
| Parallel Assignment | 380 |
| NA | 76 |
| Sequential Assignment | 30 |
| Crossover Assignment | 16 |
| Factorial Assignment | 6 |
| primary_purpose | Study_Count |
|---|---|
| Treatment | 948 |
| Diagnostic | 72 |
| Supportive Care | 43 |
| Prevention | 17 |
| Other | 14 |
| Basic Science | 10 |
| Health Services Research | 6 |
| NA | 5 |
| Device Feasibility | 3 |
| Screening | 1 |
| Country | Study_Count |
|---|---|
| United States | 88 |
| NA | 17 |
| Italy | 9 |
| Korea, Republic of | 7 |
| Canada | 6 |
| Denmark | 6 |
| France | 6 |
| United Kingdom | 5 |
| China | 4 |
| Germany | 4 |
| Belgium | 3 |
| Netherlands | 2 |
| Romania | 2 |
| Spain | 2 |
| United States|Canada | 2 |
| Austria | 1 |
| Austria|Belgium|France|Germany|Greece|Italy|Netherlands|Poland|Romania | 1 |
| Croatia|Italy|Romania | 1 |
| Egypt | 1 |
| Ireland | 1 |
| Ireland|Italy | 1 |
| Italy|Romania|Russian Federation|Serbia|Spain|Turkey | 1 |
| Pakistan | 1 |
| Portugal|Spain | 1 |
| Singapore | 1 |
| Spain|United Kingdom | 1 |
| Sweden | 1 |
| Switzerland | 1 |
| Taiwan | 1 |
| United States|Australia|Austria|Canada|France|Germany|Italy|Spain|Ukraine | 1 |
| United States|Canada|Spain|Sweden|United Kingdom | 1 |
| United States|Egypt|Germany|Peru|Singapore | 1 |
| United States|Spain | 1 |
| United States|United Kingdom | 1 |
| Site_count | Study_Count |
|---|---|
| 1 | 141 |
| 2 | 8 |
| 3 | 7 |
| 4 | 6 |
| 5 | 4 |
| 7 | 3 |
| 8 | 2 |
| 10 | 1 |
| 12 | 3 |
| 13 | 2 |
| 20 | 1 |
| 22 | 1 |
| 32 | 1 |
| 39 | 1 |
| 118 | 1 |
| Count of Versions | Count of Studies |
|---|---|
| 1 | 26 |
| 2 | 24 |
| 3 | 18 |
| 4 | 19 |
| 5 | 14 |
| 6 | 15 |
| 7 | 11 |
| 8 | 8 |
| 9 | 4 |
| 10 | 4 |
| 11 | 5 |
| 12 | 2 |
| 13 | 6 |
| 14 | 3 |
| 15 | 6 |
| 16 | 3 |
| 17 | 1 |
| 18 | 2 |
| 21 | 1 |
| 22 | 1 |
| 23 | 1 |
| 24 | 3 |
| 33 | 1 |
| 38 | 1 |
| 49 | 1 |
| 53 | 1 |
| 64 | 1 |
| Change Type | Count_of_Changes | Count_of_Studies | ratio |
|---|---|---|---|
| Study Status | 1162 | 156 | 7.448718 |
| Contacts/Locations | 370 | 116 | 3.189655 |
| Study Design | 186 | 111 | 1.675676 |
| None (earliest Version on record) | 182 | 182 | 1.000000 |
| Recruitment Status | 176 | 111 | 1.585586 |
| Sponsor/Collaborators | 131 | 73 | 1.794520 |
| Study Identification | 129 | 76 | 1.697368 |
| Eligibility | 121 | 64 | 1.890625 |
| Groups | 109 | 58 | 1.879310 |
| Interventions | 109 | 58 | 1.879310 |
| Study Description | 102 | 58 | 1.758621 |
| Outcome Measures | 101 | 67 | 1.507463 |
| Oversight | 64 | 52 | 1.230769 |
| Conditions | 52 | 30 | 1.733333 |
| References | 23 | 17 | 1.352941 |
| IPDSharing | 19 | 19 | 1.000000 |
| More Information | 6 | 3 | 2.000000 |
| Results | 5 | 5 | 1.000000 |
| Results Submission Events | 2 | 2 | 1.000000 |
| Documents | 1 | 1 | 1.000000 |
| Measure | Observational |
|---|---|
| Min | 5.00 |
| 1st Qu | 68.25 |
| Median | 150.00 |
| Mean | 18752.65 |
| 3rd Qu | 500.00 |
| Max | 2323608.00 |
| observational_model | Study_Count |
|---|---|
| Cohort | 109 |
| Case-Only | 31 |
| Case-Control | 19 |
| Other | 9 |
| Case Control | 4 |
| Family-Based | 3 |
| NA | 3 |
| Case-Crossover | 2 |
| Defined Population | 1 |
| Ecologic or Community | 1 |
| time_perspective | Study_Count |
|---|---|
| Prospective | 129 |
| Retrospective | 33 |
| Cross-Sectional | 10 |
| Other | 5 |
| NA | 4 |
| Longitudinal, Retrospective/Prospective | 1 |
| Country | Study_Count |
|---|---|
| United States | 12 |
| Italy | 4 |
| China | 3 |
| France | 3 |
| Korea, Republic of | 3 |
| Germany | 2 |
| Romania | 2 |
| Sweden | 2 |
| Argentina|Australia|Austria|Belgium|Denmark|France|Germany|Italy|Poland|Russian Federation|Singapore|Spain|Switzerland | 1 |
| Canada | 1 |
| Denmark | 1 |
| Japan | 1 |
| NA | 1 |
| Netherlands | 1 |
| Spain | 1 |
| Switzerland | 1 |
| United Kingdom | 1 |
| United States|Canada|Japan|Mexico|Taiwan|United Kingdom | 1 |
| Site_count | Study_Count |
|---|---|
| 1 | 34 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 16 | 2 |
| 18 | 1 |
| 75 | 1 |
| Count of Versions | Count of Studies |
|---|---|
| 1 | 15 |
| 2 | 5 |
| 3 | 4 |
| 4 | 2 |
| 5 | 2 |
| 6 | 7 |
| 7 | 2 |
| 8 | 1 |
| 9 | 1 |
| 12 | 1 |
| 16 | 1 |
| Change Type | Count_of_Changes | Count_of_Studies | ratio |
|---|---|---|---|
| Study Status | 115 | 26 | 4.423077 |
| Contacts/Locations | 51 | 21 | 2.428571 |
| None (earliest Version on record) | 41 | 41 | 1.000000 |
| Study Design | 24 | 14 | 1.714286 |
| Recruitment Status | 17 | 12 | 1.416667 |
| Study Identification | 15 | 6 | 2.500000 |
| Outcome Measures | 12 | 11 | 1.090909 |
| Eligibility | 11 | 7 | 1.571429 |
| Conditions | 10 | 7 | 1.428571 |
| Study Description | 10 | 7 | 1.428571 |
| Groups | 7 | 6 | 1.166667 |
| Interventions | 7 | 6 | 1.166667 |
| References | 7 | 6 | 1.166667 |
| Oversight | 6 | 6 | 1.000000 |
| Sponsor/Collaborators | 6 | 5 | 1.200000 |
| IPDSharing | 5 | 4 | 1.250000 |
| Measure | Registries |
|---|---|
| Min | 20.00 |
| 1st Qu | 100.00 |
| Median | 500.00 |
| Mean | 25496.83 |
| 3rd Qu | 1500.00 |
| Max | 999999.00 |
| observational_model | Study_Count |
|---|---|
| Cohort | 26 |
| Case-Control | 8 |
| Case-Only | 3 |
| Other | 3 |
| Family-Based | 1 |
| time_perspective | Study_Count |
|---|---|
| Prospective | 39 |
| Other | 2 |
| target_duration | Study_Count |
|---|---|
| 2 Years | 9 |
| 5 Years | 7 |
| 10 Years | 6 |
| 1 Year | 4 |
| 3 Months | 3 |
| 1 Month | 2 |
| 6 Months | 2 |
| 1 Day | 1 |
| 12 Months | 1 |
| 15 Years | 1 |
| 24 Months | 1 |
| 27 Years | 1 |
| 30 Days | 1 |
| 36 Months | 1 |
| 80 Years | 1 |